Anterior lumbar interbody fusion for discogram concordant pain.

Twenty-two patients undergoing anterior lumbar interbody fusion (ALIF) for discogram concordant low-back pain were retrospectively evaluated by objective criteria. Results were poor in all two-level fusions. Among single-level fusions, there were 35% good, 18% fair, and 47% poor results. Patients with previous surgery or workmen's compensation did poorly as a group despite positive discography. Subjective results were difficult to assess.